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Physical Science Game not for BR
Physical Science Game not for BR
25 terms
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Flashcards
25 cards
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Questions
25
Answers
1
Farsightedness, or hyperopia, can be corrected with what type lens?
concave
none of the above
reflecting
convex
2
A compound MCl
2
reacts with bromine, resulting in a compound with the formula
M2Br
there is not enough information to tell for sure
MBr
MBr2
3
The maximum number of electrons that can have the principle quantum number 2 in a given atom is
...it varies from atom to atom
8
2
4
4
Ohm's law states that in a closed circuit
the less current flows when a higher voltage is applied
current increases with increasing potential difference
a relationship between voltage, current, and charge
that for constant voltage, more resistance is more current
5
The transfer of heat that occurs when energy moves from molecule to molecule is called
phase change
convection
conduction
radiation
6
The reaction of potassium chlorate with potassium chloride and oxygen gas is an example of
ion exchange
replacement
combination
decomposition
7
What kind(s) of bonding takes place in NaOH?
coordinate
ionic
polar
covalent
8
If you multiply amp x ohm, the answers will be in units of
power
potential
current
resistance
9
A neutral atom that gains one or more electron is called a (an)
de-ionized atoms
positron
positive ion
negative ion
10
The solar technology that is today contributing about as much energy as moving water is
biomass
OTEC
power tower
solar cells
11
Niels Bohr's model of the hydrogen atom
accounted for the observed spectrum in hydrogen
contradicted the laws of physics
stated electrons existed in allowed orbits and nowhere else
all of the above
12
J.J. Thomson reasoned that cathode rays were really charged particles because
cathode rays formed only when the air was pumped from a tube
the cathode rays were attracted to the anode
the properties of the cathode rays depended the material
a magnet deflected cathode rays
13
The heat needed to warm one gram of water one Celsius degree is called a
Btu
joule
kilocalorie
calorie
14
A solution with a pH of 2
is twice as acidic as one with a pH of 1
is one-tenth as acidic as a solution with a pH of 1
is 10 times as acidic as a solution with a pH of 1
is half as acidic as a solution with a pH of 1
15
Energy sources used today are mostly in what form of energy?
electrical
chemical
radiant
nuclear
16
Electrical resistance is a property of conductors that is measured in units of
volt
coulomb
amp
ohm
17
Starch is a polymer formed by the linking of many
amino acids
triglycerids
saccharides
peptides
18
Which of the following are properties of acidic solutions?
they turn the dye litmus red
they react with active metals to produce hydrogen gas
all of the above
they taste sour
19
Which of the following are properties of basic solutions?
they feel slippery
they turn the dye litmus red
they taste sour
the react with active metals to produce hydrogen gas
20
We explain light today
mostly as a wave phenomenon
mostly with particle models
as something completely unknown
as having both wave and particle behavior
21
An incident ray of light reflects off a surface
with a greater angle as the incident ray
with the same angle as the incident ray
in all directions
perpendicular to the surface
22
In the equation: Q =m c(delta t), the c stands for
specific heat
convection coefficient
heat vaporization
number of calories gained or lost
23
The reaction 2 M
g
+ O
2
give 2 M
g
O is an example of
combustion
all of the above
combination
oxidation
24
A boy on a skateboard pushes off the ground with his foot; accelerating due to the force
the ground exerts against his foot
between the skateboard wheels and the ground
he exerts against the ground
of gravity acting on the skateboard
25
Rutherford concluded from his calculations that the volume of an atom
is mostly empty space
is filled with protons, neutrons, and electrons
is filled with electrons
is mostly protons, with electrons revolving the outside
